LTC2360ITS8 - 12-bit 100ksps SAR ADC | Analog Devices | TSOT-23-8
MPN: LTC2360ITS8 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.68 | $46.80 |
| 100 | $3.9 | $390.00 |
| 500 | $3.25 | $1,625.00 |
| 1,000 | $2.78 | $2,780.00 |
LTC2360ITS8 Overview
A SAR ADC is a successive-approximation-register converter, a class of precision Nyquist-rate data converters that perform a binary search through an internal capacitive DAC using a single comparator and a logic SAR state machine. SAR is a sub-type of analog-to-digital converter (ADC), which itself belongs to the data-converter (or precision converter) family within the broader mixed-signal IC hierarchy. SAR ADCs are widely used for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, making them a popular alternative to delta-sigma converters in multiplexed, multi-channel, and control-oriented applications.
The LTC2360 family features a true-analog ground-referenced 0 V to VDD or 0 V to VREF unipolar input range, providing excellent ground-referenced signal handling for low-voltage sensors. The part operates from a single 2.7 V to 3.6 V analog supply, requires only 0.5 mA at 100 ksps, and supports an external reference up to VDD for designer-controlled input range scaling. Conversion is initiated through a simple serial-clock (SCK) protocol with a one-cycle latency, allowing direct interface to SPI-/QSPI-/MICROWIRE-compatible microcontrollers and DSPs without glue circuitry.
Architecturally, the LTC2360ITS8 combines a precision low-power capacitive DAC, a high-speed comparator, and an internal oscillator. Auto shutdown between conversions drops quiescent current dramatically at lower sampling rates, allowing the part to consume microampere-level average current in duty-cycled sensor reads. Available in 6-pin and 8-pin TSOT-23 packages, the SOT-23 footprint enables extremely small board area, ideal for high-density sensor nodes, portable instrumentation, and space-constrained PCB layouts.
Typical applications include portable and battery-powered sensor acquisition, isolated data acquisition front-ends, pen tablets and touch digitizers, consumer audio and instrumentation, industrial process control loops, and general-purpose analog monitoring. The wide operating range and small package also make it suitable for wearable health monitors and IoT edge devices.
When designing with this part, ensure the reference pin is properly bypassed and that the analog input is bandwidth-limited to the 100 ksps Nyquist limit. The SOT-23-8 footprint with exposed pad requires careful PCB thermal layout to dissipate the modest power dissipation of approximately 1.5 mW at 100 ksps.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for parametric, sourcing, and design-in information for the LTC2360ITS8.
Drop-in alternatives for LTC2360ITS8 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LTC2360ITS8 (same form factor and footprint) — differing in Package, Operating Temperature, Data Interface, Number of Channels, Reference.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTC2361ITS8
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →LTC2362ITS8
✅ Drop-In✓ In Stock
$3.58 / Unit
View Datasheet →LTC2360HTS8
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →LTC2360HTS8#TRMPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2360ITS8#TRPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2360ITS8 Maximum Ratings & Electrical Characteristics
| Resolution | 12 bit |
| Sampling Rate | 100 ksamples per second (ksps) |
| Architecture | SAR (Successive Approximation Register) |
| Number of Channels | 1 Input |
| Supply Voltage (VDD) | 2.7 V to 3.6 V (single 3 V supply) |
| Supply Current (typ) | 0.5 mA at 100 ksps |
| Input Voltage Range | 0 V to VDD or 0 V to VREF |
| Reference Voltage | External VREF (max VDD) |
| Conversion Latency | 1 SCK cycle |
| Interface | SPI / QSPI / MICROWIRE-compatible |
| Auto Shutdown | Yes (between conversions) |
| Package | TSOT-23-8 (TS8) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (industrial I grade) |
| RoHS Status | Compliant |
LTC2360ITS8 Pin Configuration
| Pin 1 | VDD — Analog power supply input (2.7 V to 3.6 V) |
| Pin 2 | REF — Reference voltage input (max VDD); sets full-scale input range |
| Pin 3 | GND — Analog ground |
| Pin 4 | VIN — Analog input (0 V to VDD or 0 V to VREF) |
| Pin 5 | GND — Analog ground (recommended tie to GND plane) |
| Pin 6 | DOUT — Serial data output (SPI MOSI-compatible) |
| Pin 7 | SCK — Serial clock input (SPI SCLK-compatible) |
| Pin 8 | CONVST — Conversion start (active high; falling edge initiates conversion) |
Typical Applications
LTC2360ITS8 is suitable for 6 applications: Portable Battery-Powered Sensor Acquisition, Industrial Process Control and Monitoring, Isolated Data Acquisition Front-End, Pen Tablet and Touch Digitizer Position Sensing, Consumer Audio and Instrumentation Signal Monitoring, Wearable Health and IoT Edge Devices.
Portable Battery-Powered Sensor Acquisition
The LTC2360ITS8 is well matched to portable, battery-powered multi-sensor acquisition thanks to its 0.5 mA typical supply current at 100 ksps and automatic shutdown between conversions that drops average current to the microampere range. The 2.7 V to 3.6 V single-supply operation directly interfaces single-cell Li-ion or 3 V coin-cell chemistries, and the 0 V to VREF unipolar input accepts ground-referenced sensor outputs without level shifting. The TSOT-23-8 footprint minimizes board area for wearable and IoT designs, where the 12-bit resolution is sufficient for temperature, pressure, and strain-gauge acquisition at sensor update rates well below 50 kHz.
Recommended
Industrial Process Control and Monitoring
The LTC2360ITS8 fits industrial process-control front-ends with its 12-bit deterministic SAR conversion, single-cycle latency, and ground-referenced 0 V to VREF input. Combined with an external 2.5 V reference, the ADC delivers 12-bit accuracy over a 0-2.5 V transducer range - perfect for 4-20 mA loop sense resistors scaled to this voltage. The SPI-/QSPI-/MICROWIRE-compatible interface allows direct connection to industrial MCUs and DSPs, while the small TSOT-23 package enables dense multi-channel acquisition boards with per-channel isolation amplifiers.
Recommended
Isolated Data Acquisition Front-End
In isolated data-acquisition systems, the LTC2360ITS8 serves as a low-power ADC on the field (sensor) side of an isolation barrier. Its 0.5 mA supply current minimizes the power the isolated supply must provide, and the SPI-compatible serial interface can be easily routed through standard digital isolators with minimal latency. The 100 ksps sampling rate is well matched to industrial sensor bandwidth, and the TSOT-23-8 footprint keeps the isolated-side PCB extremely compact. Combined with an external low-power reference such as the LTC6655, designers can achieve sub-1 mA total isolated-side power budgets.
Recommended
Pen Tablet and Touch Digitizer Position Sensing
The LTC2360ITS8 is well suited to digitizer and pen-tablet position-sensing front-ends where multiple analog axes (X/Y/pressure) must be sampled with deterministic latency at moderate speeds. The 100 ksps sampling rate comfortably handles multi-channel multiplexed position reads at tablet update rates, while the 12-bit resolution matches the typical position-precision requirements of consumer pen tablets. The tiny TSOT-23-8 footprint is critical for ultra-thin tablet PCBs, and the 0.5 mA supply current helps meet stringent battery-life targets for wireless stylus applications.
Recommended
Consumer Audio and Instrumentation Signal Monitoring
For consumer audio and instrumentation signal monitoring, the LTC2360ITS8 provides a low-cost, low-power 12-bit digitizer for VU-meters, spectrum-display drivers, and audio-level metering. The 100 ksps sampling rate easily covers audio-bandwidth monitoring applications when downsampled, and the unipolar 0 V to VREF input accepts rectified or DC-coupled audio envelopes directly. The TSOT-23-8 footprint and 0.5 mA supply current keep BOM cost and power budget low, while the SPI-compatible interface plugs into common audio CODEC/MCU architectures with one shared bus.
Recommended
Wearable Health and IoT Edge Devices
The LTC2360ITS8 suits wearable health monitors and IoT edge devices where board area, power consumption, and BOM cost are tightly constrained. The 0.5 mA active current and microampere-level sleep current between conversions extend battery life across multi-day wear scenarios, while the TSOT-23-8 footprint enables integration into wristbands, patches, and small form-factor sensor pods. The 12-bit resolution is sufficient for heart-rate, SpO2, skin-temperature, and motion-sensor acquisition, and the 2.7 V to 3.6 V supply directly supports small Li-ion or coin-cell chemistries used in wearables.
Recommended
Recommended Products Summary
Engineering reference data for LTC2360ITS8 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC2361ITS8 | LTC2362ITS8 | LTC2360HTS8 | LTC2360HTS8#TRMPBF | LTC2360ITS8#TRPBF |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | TSOT-23-8 | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 100 ksps | 250 ksps | 500 ksps | 100 ksps | 100 ksps | 100 ksps |
| Supply Current (typ) | 0.5 mA | 0.75 mA | 1.1 mA | 0.5 mA | 0.5 mA | 0.5 mA |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (H grade) | -40C to +125C (H grade) | -40C to +85C (I grade) |
| Supply Voltage Range | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
Key Differentiators
- Lowest-power member of the LTC236x family at 100 ksps / 0.5 mA (vs LTC2362ITS8)
- Drop-in compatibility with LTC2361ITS8 for design scalability (vs LTC2361ITS8)
- Available in extended-temperature H grade via LTC2360HTS8 (vs LTC2360HTS8)
Design Notes
The LTC2360ITS8's automatic shutdown between conversions is its primary power advantage. Average supply current scales linearly with sampling rate when duty-cycled (e.g., 100 ksps continuous = 0.5 mA; 1 ksps duty-cycled at 1% duty = ~5 uA average). For battery-powered designs, drive CONVST only when a sample is required and let the device enter its microampere-level sleep state between conversions. Add a 0.1 uF ceramic bypass capacitor as close to the VDD pin as possible.
The TSOT-23-8 package is extremely small; place the VDD bypass capacitor and REF bypass capacitor within 2 mm of their respective pins to minimize ground bounce and reference noise. Use a single, uninterrupted analog ground plane tied to GND pins 3 and 5, and keep digital SCK/DOUT/CONVST traces routed away from the analog VIN trace. The exposed thermal pad (if present per JEDEC TSOT-23-8 variant) should be soldered to the analog ground plane for thermal dissipation, although the part dissipates ~1.5 mW and rarely requires thermal management.
The analog input VIN has a bandwidth limit; bandlimit the input signal to less than half the sampling rate (Nyquist) to avoid aliasing. For most sensor applications, an external RC anti-aliasing filter (e.g., 1 kohm + 1 nF = ~160 kHz) provides adequate rejection above the 100 ksps Nyquist. If driving VIN from a high-impedance source, add a buffer amplifier to prevent sample-and-charge kickback from disturbing the input signal. Reference pin REF should be bypassed with a 10 uF tantalum or ceramic capacitor in parallel with a 0.1 uF ceramic.
Do not exceed VDD on the analog input pin VIN - the absolute maximum is VDD + 0.3 V per the LTC2360 datasheet. Do not operate the part outside the 2.7 V to 3.6 V supply range, as specified in the datasheet. Do not omit the REF bypass capacitor, as reference instability directly couples to conversion noise. When using an external reference, choose one with low noise (e.g., 10 uVrms or less) and adequate PSRR at the system switching frequencies. Avoid sharing the analog ground return with high-current digital or power paths.
Compliance Information
RoHS and lead-free compliant per Analog Devices product page. AEC-Q100 qualification not applicable for I-grade - the H-grade LTC2360HTS8 is the variant for harsh-environment applications. REACH compliance per standard ADI declarations.
